Coj
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Lead Roll
Nws muaj zog corrosion kuj, acid thiab alkali tsis kam, acid-resistant ib puag ncig kev tsim kho, kev kho mob hluav taws xob tiv thaiv, X-ray, CT chav hluav taws xob tiv thaiv, aggravation, suab rwb thaiv tsev thiab ntau lwm yam, thiab nws yog ib tug pheej yig hluav taws xob tiv thaiv khoom.common thi -
Lead Phaj
Cov phaj txhuas yuav tsum yog 4 mus rau 5 hli tuab los tiv thaiv hluav taws xob.Cov khoom tseem ceeb ntawm cov phaj txhuas yog txhuas, nws qhov piv yog hnyav, qhov ceev yog siab
